9072749 has 8 divisors (see below), whose sum is σ = 10486080. Its totient is φ = 7688736.

The previous prime is 9072731. The next prime is 9072757. The reversal of 9072749 is 9472709.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9072749 - 2¹⁶ = 9007213 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9072769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6659 + ... + 7904.

It is an arithmetic number, because the mean of its divisors is an integer number (1310760).

Almost surely, 2^9072749 is an apocalyptic number.

It is an amenable number.

9072749 is a deficient number, since it is larger than the sum of its proper divisors (1413331).

9072749 is a wasteful number, since it uses less digits than its factorization.

9072749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14659.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 9072749 is about 3012.1004299326. The cubic root of 9072749 is about 208.5673382706.

The spelling of 9072749 in words is "nine million, seventy-two thousand, seven hundred forty-nine".